Electric igniter device.



L. BASKIN.

ELECTRIC IGNITER DEVICE.

APPLIOATION FILED MAY 7. 1907.

Patented July 13, 1909.

UNITED LOUIS BASKIN, OF NEW YORK, N. Y.

EI JE ICTRIC IGNITER DEVICE.

Specification of Letters Patent.

Patented July 13, 1909.

Application filed May 7, 1907. Serial No. 372,376.

To all whom it may concern:

Be it known that I, LOUIS BASKIN, a sub' ject of the Czar of'llussia,and resident of -New York city, borough of Brooklyn, New

York, have invented certain new and useful. Improvements in ElectricIgnit'cr Devices, of which the following is a specification.

My invention relates to improvements in electric igniters, commonlycalled spark plugs, for use in electrical ignition circuits in gasengines and the like, and it has for its object to provide improvedmeans for making gas-tight joints between the base and in sulatingmember of, the plug; to provide im proved terminals or points for thejump spark rand also generally to improve the construction of suchdevices.

The invention comprises the novel details of improvement andcombinations of parts that will be more fully hereinafter set forth andthen pointed out in the claims.

Reference is to be had to'the accompanying drawings forming parth.ereof,wherein,

Figure 1 is an end View of an igniter or spark plug embodying myinvention, Fig. 2 is a central section thereof, Fig. 3 is a crosssection on the line 3, 3 in Fig. 2, Fig. 4 is a detail view of the outerend of the plug show-- ing the relation of the parts, Fig. 5 is a detailend view of the spring clip for the terminal wire. l

Similar numerals of reference indicate corresponding parts in theseveral views.

In the drawings the numeral 1 indicates a suitable metal base shownprovided with usual screw threads 1 for attachment to an engine, andsaid base also has a bore 1 receiving the insulating member 2. At itsouter end base 1 is provided with an extension 1 extending lengthwise ofthe base and made integral therewith and having a sub stantiallytriangular-shaped inwardly extending arm 1 at the outer end extendingtransversely, at the small end of which is attached the contact orterminal 3, such as platinum, which may be driven into a hole in arm 1.At 4 is a corresponding terminal shown proj ecting from a rod orconductor 5, which terminal may be made of platinum, and is lo catedadjacent terminal 3 providing a space therebetween for the jump spark.The tapering form of arm 1 serves to keep the spark near the end of thearm if the terminal 4 bccomes displaced. The rod 5 of suitable metal iscarried by the insulating member 2 and is shown located within the bore2 therein,

and proiects through bore 1', and at its upper end rod 5 is providedwith a screw thread 5 pro ecting beyond member 2. 1 0d 5 is shownprovided wlth a packing or sleeve 6,

which may be made of soft metal, such as brass, secured on said rod; andsaid sleeve is shown beveled or tapered at 6 to bear against thecorresponding beveled seat 2 at the base 2 of insulation 2 to. make agastight joint thercat. 'Base 1 has an enlarged bore 1 provided with aconcave or recessed seat i surrounding an annular rib 1 at the edge ofbore 1", and insulating'member 2 has a correspoiuling concave annularseat 2 opposed to the rib 1 and also has anannular projection or rib 2opposed to seat 1.

At 7 is a suitable packing or washer interposed between the parts IE1,and 2, 2 adapted, when the i'nsulatiiig member 2 is pushed within base.1, to make. gas tight joints therebetween. The bore 1 has internalthreads 8 receiving corresponding threads on a nut 9 which fits overinsulating member 2. Said nut is split vertically, as at 9, for the fulllength on one side, and may also be split for a short distance on theother side,'as

at 9*, and said nut has an inwardly projecting flange 9 engaging acorresponding groove 10 in insulating member 2-. By having's aid nutsplit vertically it may be sprung open sufliciently to en able-itsflange 9 d to enter the groove 10 so that when said nut is screwed intothe threads 8 of base 1 it will draw the insulating member 2 downwardlywithin base 1 to force said memberfirmly against packing 7. The nut 9may be slipped endwisc along insulating member 2, and the integralportion of the nut will be of suflicient dimension and elasticity as notto break apart when the nut is applied upon member 2. This constructionenables the use of porcelain or other suitable insulating material forthe member 2, while permitting the nut to draw said member downwardlyinto base 1. The insulating member 2 is shown provided with. an annularhead 11 of greater diameter than nut 9 to assist in protecting the same.At 12 is a nut screwed upon threads 5 of rod 5 serving to draw thepacking or sleeve (5 of said rod securely against its seat 6 ininsulation 2 and uniting said parts firmly together. At 14 is a nutfitted upon threads 5 and a terminal wire may be secured between saidnuts 12 and l t, and nut 14 also may have a groove 14 to receive aforked terminal ofa conductor when desired. Said nut 14 at its outer endis also shown provided with spring fingers 14 adapted to receive aterminal 15 from a line wire.16, which terminal may be provided withscrew threads 15 adapted to be screwed into insulation 17 of the linewire and in contact with theWire 16 to make circuit'therewith, wherebysaid terminal is firmly connected with the conductor. Said terminal maybe attached to nut 14 ,by pushing the part 15 between the fingers 14 andbe removed by pulling it therefrom.

An insulating sleeve 18 may surround the nuts 12 and 14 and the end ofinsulation 17 and bear against the insulating head 1 1 to protect theterminal from water.

Having now described my invention what I claim is:

1; An igniter comprising a base provided with a terminal and having abore, an insulating member within said bore and provided with aterminal, said base and member having complemental annular recesses andprojections, packing interposed between said recesses and projections,said insulated member being provided with an annular groove above saldbase, and a nut having threads fitting threads in the base and providedwith an inward flange entering the groove of said member, said nuthaving an integral portionat its threads on one side and dividedvertically on the opposite side to enable the flange of the nut toenter'into the groove of said member while the parts of the nut remainunited the nut and insulating member remaining united when removed fromthe base.

2. An igniter comprising a base provided with a terminal and having abore, an insulating member having a terminal at the lower part andprovided with an annular. groove above said base, and a nut dividedvertically throughout its length on one side and integral at thethreaded portion on the opposite side and divided above said integralportion, said nut having an inward flange above the threads fitting thegroove of the insulating member, whereby the nut may be sprung open tofit its flange in said groove and the parts of the nut remain intactthenut and insulating member remaining united when rer moved from thebase.

LOUIS 'BASKIN; [1 s] Witnesses:

BENJ. VVALLERTON, ISRAEL GOLDSTEIN.

